The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.
Answer:
Factor analysis is a collection of techniques employed to explore underlying latent variables or factors which influence the outcomes on a number of measured variables.
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I am pretty sure the answer is D (combination)
